Basic Documentation

Functions
Additional functions
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4.5 Additional functions
Functions (parameters)
Description
RDF660T
Sensors and changeover functions [➙ 26]
● Automatic heating/cooling changeover via
changeover sensor (P36, P37)
● Changeover switch (P38, P40)
Thermostat runs sequences depending on water
temperature
✓
✓
● Manual heating/cooling changeover (P01)
Heating / cooling controlled manually by user (via
HMI)
✓
● External/return air temperature sensor
(P38, P40)
Temperature measurement with external sensors
✓
Hotel keycard/Presence detector [➙ 27]
● Presence detector (P38, P40)
Switch operating mode
✓
Output functions [➙ 27]
● Purge function (P50)
To ensure correct acquisition of the water
temperature
✓
● Minimum output On/Off time (P48, P49)
To protect HVAC equipment, e.g., the compressor,
and to reduce wear and tear
✓
● Floor heating
Application without fan control
✓
Monitoring and limitation functions [➙ 28]
● Floor temperature limitation function
(P51)
For user Comfort and protect the floor
✓
● Dewpoint monitoring
To prevent condensation damages to the building
✓
User operation / Indication [➙ 29]
● Key lock (P14)
To limit access of unauthorized persons
✓
Prevention operation [➙ 29]
● Avoid damage from moisture (P61)
To prevent moisture damage
✓